“These headphones have powerful bass (comes with a lot of ommph) which is good and lets honest if your interested in these earphones main reason will be for the bass
For listening to music such as Pop and dubstep these are very good as the beat/bass just comes alive.
For rock I found them good but not excellent.
For classical and new age music its OK I found them a...” --butter30

“
I am always on the search for great in-ear headphones, however I always seem to find the same problem, because they are in ear, they tend to have very small drivers, meaning there is never much bass, and in most cases the highs are also messed up in an effort to get more bass!
So I am always on the lookout for in-ear headphones that have good bass, yet have a nice flat frequency...” --MyConnor5Review

“I am a Grado fan. More precisely, I am a Grado modder. Everything I listen to is tinkered with, and woodied….Needless to say, I favor a bright sound signature, open-backs and am not very into IEMs. For all of my listening I use my FiiO X5 on low gain, loaded with 16/44 FLAC files. IEMs are a necessary evil in an occasionally noisy world, but given I have oddly shaped ear canals (thanks to a...” --fleasbaby

“I'll be short : I was very disappointed when I listened to the PAA1-Pro the first time. I found bloated bass, harsh highs and a typical mainstream V-shaped sound signature. So, I began a hundred hour burn-in and retry it... Nothing changed a lot. Maybe the highs became less harsh but still not what I would call pleasant to my ears. I put them away a time and come back to them after two weeks....” --tinara

“
So after a day of somewhat abusive run in (free and impatient) and tip rolling, I can say these easily play in a realm at or above their $100 price point. The stock tips are fine and Grado tips also work well but try a few doubles on them all the way to the base and you may get really great results. The stock tips are short and I prefer those up near the tip, the Grado/Orto tips...” --goodvibes

“Foreword:
I'm a production manager, but mainly focus on live sound engineering and lighting. I install and tune P.A equipment, and mix live acts in:
- live venues,
- concert halls,
- bars, and
- nightclubs.
I've taken a huge liking to headphones - IEMs in particular. I like the idea of having my own personal PA system that I can take with me anywhere. With Rockbox being in such...” --White Lotus

“
Disclaimer: Rather than being an audiophile like most of the members here, I consider myself to be just an enthusiast consumer. I have very limited experience with headphones and anyone looking at my current review should be aware of that.
The PAA-1's are my first decent earphones. Despite being entry-level if judged by price and appearance alone, the sound they produce is good and...” --horizon21

“First of all, I would like to thank Jack Fu of Hisound Audio for generously sending me the E350 and 2 other models for me to review.
Recently, Hisound Audio has really impressed me with their entry level, budget minded IEMs and earbuds and the E350 is a new model that Hisound has just put out. It is priced at $25 and is the model above the PAA-1 and under the PAA-1 Pro that I have also...” --lin0003

“Introducing HiSound Audio's Crystal IEMs
After reviewing HSA's E212 and PAA-1Pro recently, Jack approached me and asked if I'd like a review sample of the Crystal (IEM) and Living (Earbuds). I jumped at the chance, and after paying for the freight - they duly arrived a couple of weeks ago. I’ve listed price at the RRP of ~ USD $69 – this is not what I paid for them...” --Brooko

“Very interesting headphones from famous HiSound audio, makers of RoCoo and Studio players.
This earbuds features big dynamic driver, optimised for great mids and highs, making this earphones interesting sollution for classical music, jazz and other "non-heavy" genres. Lots of air in sounding can bring you a pleasure, especially when paired with good amp/PMP.
From other side, this earphones...” --cleg